title: Shear stress sensing with Bragg grating-based sensors in microstructured optical fibers.
abstract: We demonstrate shear stress sensing with a Bragg grating-based microstructured optical fiber sensor embedded in a single lap adhesive joint. We achieved an unprecedented shear stress sensitivity of 59.8 pm/MPa when the joint is loaded in tension. This corresponds to a shear strain sensitivity of 0.01 pm/µε. We verified these results with 2D and 3D finite element modeling. A comparative FEM study with conventional highly birefringent side-hole and bow-tie fibers shows that our dedicated fiber design yields a fourfold sensitivity improvement.
authors.forename: Sanne
authors.initials: S
authors.lastname: Sulejmani
authors.forename: Camille
authors.initials: C
authors.lastname: Sonnenfeld
authors.forename: Thomas
authors.initials: T
authors.lastname: Geernaert
authors.forename: Geert
authors.initials: G
authors.lastname: Luyckx
authors.forename: Danny
authors.initials: D
authors.lastname: Van Hemelrijck
authors.forename: Pawel
authors.initials: P
authors.lastname: Mergo
authors.forename: Waclaw
authors.initials: W
authors.lastname: Urbanczyk
authors.forename: Karima
authors.initials: K
authors.lastname: Chah
authors.forename: Christophe
authors.initials: C
authors.lastname: Caucheteur
authors.forename: Patrice
authors.initials: P
authors.lastname: Mégret
authors.forename: Hugo
authors.initials: H
authors.lastname: Thienpont
authors.forename: Francis
authors.initials: F
authors.lastname: Berghmans